A New Experimental Design for Bacterial Microleakage Investigation at the Implant-Abutment Interface: An In Vitro Study

The International Journal of Oral & Maxillofacial Implants
Holger ZipprichHans-Christoph Lauer

Abstract

This study aimed to test bacterial microleakage at the implant-abutment interface (IAI) before and after dynamic loading using a new chewing simulation. Fourteen implant systems (n = 5 samples of each) were divided into two groups: (1) systems with conical implant-abutment connections (IACs), and (2) systems with flat IACs. For collecting samples without abutment disconnection, channels (Ø = 0.3 mm) were drilled into implants perpendicularly to their axes, and stainless-steel cannulas were adhesively glued inside these channels to allow a sterilized rinsing solution to enter the implant interior and to exit with potential contaminants for testing. Implants were embedded in epoxy resin matrices, which were supported by titanium cylinders with lateral openings for inward and outward cannulas. Abutments were tightened and then provided with vertically adjustable, threaded titanium balls, which were cemented using composite cement. Specimens were immersed in a bacterial liquid and after a contact time of 15 minutes, the implant interior was rinsed prior to chewing simulation (0 N ≘ static seal testing). Specimens were exposed to a Frankfurt chewing simulator. Two hundred twenty force cycles per power level (110 in ± X-axis) were ap...Continue Reading

Citations

Feb 16, 2018·Clinical Implant Dentistry and Related Research·Carlos LarruceaOlga Lobos
Apr 6, 2019·Implant Dentistry·Caroline Bosquê KeediPedro Tortamano
Aug 14, 2019·Periodontology 2000·Georgios E RomanosAnton Sculean
Aug 14, 2019·Periodontology 2000·Theofilos Koutouzis
May 28, 2019·Implant Dentistry·Caroline Bosquê KeediPedro Tortamano
Jan 27, 2021·International Journal of Molecular Sciences·Georgios E RomanosRafael Delgado-Ruiz

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